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I got some rubber molding adhesive on the drivers side window and now cannot take it off. I do not want to scratch it with anything unknown because it is a numbers matching window. The hardened drip has been reduced to a very thin layer by applying Goo Off and various other adhesive removers. Yet, ultimately, what remains of the stain, is still there and cannot be wiped off. Even after many attempts. Any advice on what solvent to use without damaging the glass. And yes, I have carefully tried, on several attempts a razor blade with no success. Thanks in advance.__________________

I have tried lacquer thinner. It is the most difficult stain to take off. And it is glass I am dealing with which can easily scratch. I will need something much stronger than that and yet without damaging the glass. Thanks for the quick response.

Quite honestly, it might not even be rubber adhesive. I was not the one who installed the rubber so it is difficult to know what actually occurred and what the stain consist of. I just am assuming it is adhesive because it is in the form of a very thing layer colorization of something that looks like a small drip just underneath the rubber molding area. The stain is on the upper edge of the drivers side window glass.

You probably already know this, but a razor blade WILL scratch glass. I remember using goof off for that kind of thing years ago. I used a cotton swab and rolled it around the area to try to keep it on there, in a little puddle, so it could break it down. But like you said, who knows what it really is... Good luck..... Danny

A picture would help.... What color is it?Sounds like something may have chemically "etched" the surface of your glass. I've seen this often on a variety of classic car glass, especially where the car sat with "residue" on it for a long time. If that's what it is, then all the glass cleaners in the world will not fix it.